In the case of Johnson v. transportation agency of santa clara county, what is the significance of this case?meaning its relationship with other...

The significance of this case was that in this case, the
Court said that affirmative action programs that gave preference to women were legal. 
The Court said that the programs were legal when they were meant to remedy past
discrimination against women.

The case fits in with other
cases that have allowed affirmative action on the basis of race.  They indicate that, at
that time, the Court was pretty liberal compared to what it is now.  As far as impact,
it is one of the cases that has worked to promote the rights of women in the United
States.